An integrated casting equipment for the oil pan of an automobile engine

Abstract

The present invention discloses an integrated casting device for an automobile engine oil pan, which relates to the technical field of casting; the present invention includes a rotating base and a forming conical rotating support body. A concave mold, a convex mold and an injection channel are provided on the support body. It is driven by a driving motor to rotate, and the metal liquid is filled into the mold gap by centrifugal force for forming; the device uses an L-shaped bracket and a wing-shaped counterweight to press the mold to ensure the sealing performance; automatic unloading is realized through a unloading push plate and a thimble; compared with the traditional casting device relying on PLC control, this device only needs the electromagnet to be turned on and off to complete the whole process, simplifies the operation, reduces the cost, improves the product quality and production efficiency at the same time, has the advantages of energy conservation and environmental protection, and is suitable for large-scale industrial production.

Description

Technical Field

[0001] The present invention relates to the field of casting technology, and specifically to an integrated casting device for an automobile engine oil pan. Background Art

[0002] Traditional casting devices for automobile engine oil pans mostly adopt the method of combining fixed molds with high-pressure die casting or gravity casting. In the process, it is usually necessary to precisely adjust multiple links such as molten liquid injection, mold closing, cooling, and unloading through a PLC digital control system. However, there are significant disadvantages: First, the PLC control system is complex in design and requires professional personnel for programming and maintenance, resulting in high initial investment and later maintenance costs of the equipment; Second, the unloading process usually requires manual assistance or additional mechanical operations, which is not only inefficient but also may damage the mold or product due to improper operation; In addition, the control system is too dependent on digital modules. Once a failure occurs, the repair cycle is long and the cost is high. In contrast, this device innovatively uses the on-off control of electromagnets to replace the PLC digital system, and all processes can be completed only through the simple cooperation of magnetic force and mechanical structure, greatly simplifying the control method and simultaneously solving many problems in traditional technologies. Summary of the Invention

[0003] To overcome the defects of the above-mentioned prior art, the present invention provides the following technical solution: An integrated casting device for an automobile engine oil pan, including a rotating seat, on which a forming conical rotating support is rotatably installed. At the bottom of the outer surface of the forming conical rotating support, a concave mold is provided. A convex mold is arranged in the concave mold, and a gap for forming the shape of the engine oil pan is provided between the convex mold and the inner wall of the concave mold; an injection groove is provided at the axis of the forming conical rotating support, and the injection groove is communicated with the concave mold through an injection channel. Among them, exhaust holes are provided at the top edge of the concave mold; A plurality of support frames are fixedly installed on the lower surface of the rotating seat, and a driving motor is fixedly installed on the support frames. The driving motor is coaxially arranged with the rotating seat, and the driving motor is arranged below the rotating seat, and the driving motor is used to drive the forming conical rotating support to rotate.

[0004] Preferably, there are three concave molds, convex molds, and injection channels, and the injection channels, convex molds, and concave molds are all rotationally equidistantly arranged in a circumferential inclined plane of the forming conical rotating support. Among them, three L-shaped bracket rotating seats corresponding to the positions of the concave molds are also fixedly installed on the forming conical rotating support, and an L-shaped bracket is movably installed on each L-shaped bracket rotating seat.

[0005] Preferably, a wing-shaped counterweight is fixedly installed at one end of the L-shaped bracket away from the L-shaped bracket rotating seat, and an injection pipe communicated with the inside of the injection groove is also fixedly installed at the axis position of the forming conical rotating support. Three top-fitting electromagnets magnetically contacting and cooperating with the wing-shaped counterweights are fixedly installed on the circumferential surface of the injection pipe.

[0006] Preferably, the injection pipe and the L-shaped bracket are also elastically connected by an elastic tension strip, and the elastic tension strip is used to pull the L-shaped bracket to swing towards the top to fit the electromagnet, so that the wing-shaped counterweight fits the top electromagnet.

[0007] Preferably, three support arms are fixedly installed on the circumferential inclined surface of the formed conical rotating support body, and two parallel convex die support sliding rods are slidably installed on each support arm. The two convex die support sliding rods are fixedly matched with the convex die, and a convex die return spring is wound around each convex die support sliding rod. Both ends of the convex die return spring are fixedly matched with the support arm and the convex die.

[0008] Preferably, a downward pressing ejector rod is fixedly installed on the convex die. The downward pressing ejector rod is in contact and sliding fit with the L-shaped bracket, and the downward pressing ejector rod is used to transfer the force on the L-shaped bracket to the convex die; a funnel is inserted at the top end of the injection pipe.

[0009] Preferably, three discharge push plates are slidably installed on the formed conical rotating support body. A top contact plate and a bottom contact plate are fixedly installed at the top end and the bottom end of the discharge push plate respectively. The two ends of the discharge push plate extend to the lower part of the formed conical rotating support body and the upper oblique part of the formed conical rotating support body respectively. The top contact plate is in contact and fit with the convex die support sliding rod, and the lower surface of the bottom contact plate is in magnetic contact and fit with a discharge electromagnet. The discharge electromagnet is fixedly installed on the lower surface of the formed conical rotating support body.

[0010] Preferably, a discharge return spring embedding trapezoidal hole is obliquely opened on the lower surface of the formed conical rotating support body. The axis of the discharge return spring embedding trapezoidal hole is parallel to the sliding direction of the discharge push plate on the formed conical rotating support body. The discharge return spring embedding trapezoidal hole is communicated with the inside of the concave die through a jack. A discharge ejector pin is slidably and hermetically inserted in the jack. A discharge return spring is wound around the discharge ejector pin. One end of the discharge return spring is fixed to the bottom end of the discharge ejector pin, and the other end of the discharge return spring is fixed to the inner wall of the discharge return spring embedding trapezoidal hole. The bottom contact plate is in contact and fit with the discharge ejector pin.

[0011] Preferably, a toothed ring plate is rotatably installed on the lower surface of the rotating seat. The toothed ring plate and the central position of the lower surface of the formed conical rotating support body are fixedly and synchronously rotated through a rotating shaft. A central gear is rotatably fitted at the center position inside the toothed ring plate. The central gear and the toothed ring plate are meshed and driven by three planetary gears. The three planetary gears are rotatably installed on a planetary gear mounting plate. A permanent magnet ring is fixedly installed at the edge position of the planetary gear mounting plate.

[0012] Preferably, two stacked and coaxially arranged first limiting electromagnets and second limiting electromagnets are fixedly installed on the lower surface of the rotating seat. Among them, the permanent magnet ring is rotatably installed in the inner rings of the first limiting electromagnet and the second limiting electromagnet, and the permanent magnet ring is magnetically engaged with both the first limiting electromagnet and the second limiting electromagnet. The output shaft of the driving motor penetrates through the planetary gear mounting plate and is fixedly engaged with the central gear. The planetary gear mounting plate is rotatably engaged with the output shaft of the driving motor, and the toothed ring plate is rotatably engaged with the planetary gear mounting plate.

[0013] The present invention has the following beneficial effects compared with the prior art: (1) The present invention drives the formed conical rotating support to rotate through the rotating seat and the driving motor, and uses centrifugal force to automatically fill the molten metal into the gap between the concave mold and the convex mold, without the need for a complex external mechanical pushing device. Compared with traditional casting equipment that requires manual or multi-step mechanical operations, this equipment can realize the whole process automation from molten liquid injection to forming and unloading through simple on-off control of electromagnets, significantly reducing the production cycle and improving the batch production efficiency of the engine oil pan, and is especially suitable for large-scale industrial production requirements; (2) The present invention uses the L-shaped bracket and the wing-shaped counterweight block to press the convex mold under the action of centrifugal force, and transmits the force to between the convex mold and the concave mold through the downward pressing ejector rod to ensure that the two are closely fitted during the molten liquid filling process, avoiding molten liquid leakage or forming defects. Through the dual action of centrifugal force and gravity, this equipment significantly improves the forming accuracy and surface quality of the oil pan, ensuring the consistency and reliability of the product; (3) The present invention abandons the mode of traditional casting equipment relying on a complex PLC digital control system, and can realize functions such as rotation speed adjustment, mold pressing and unloading only through the on-off combination of the first limiting electromagnet, the second limiting electromagnet, the top fitting electromagnet and the unloading electromagnet. The operator only needs to master the simple timing of the electromagnet switch and does not need professional programming knowledge to control the equipment, greatly reducing the operation training cost and equipment maintenance cost; (4) Through the coordinated action of the unloading push plate and the unloading ejector pin, combined with the elastic reset design of centrifugal force and the unloading return spring, this equipment can quickly eject and separate the oil pan from the concave mold after forming, without manual knocking or additional mechanical disassembly. Description of the Drawings

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0015] Figure 2 is Figure 1 the structural schematic diagram at A in

[0016] Figure 3 It is a diagram showing the installation position of the driving motor of the present invention;

[0017] Figure 4 It is a structural schematic diagram at the toothed ring plate of the present invention;

[0018] Figure 5 Structural schematic diagram of the discharging push plate of the present invention;

[0019] Figure 6 is Figure 5 structural schematic diagram at position B in

[0020] Figure 7 Structural schematic diagram of the discharging ejector pin of the present invention.

[0021] In the figure: 101 - Forming conical rotating support; 102 - Injection groove; 103 - L-shaped bracket rotating seat; 104 - Injection channel; 105 - Discharging ejector pin; 106 - Discharging return spring; 107 - Discharging return spring embedded trapezoidal hole; 108 - Convex mold; 109 - Vent hole; 110 - Concave mold; 111 - Discharging electromagnet; 112 - Discharging push plate; 113 - Top contact plate; 114 - Bottom contact plate; 115 - Convex mold support slide bar; 116 - Convex mold return spring; 117 - Support arm; 118 - Pressing down ejector rod; 119 - Rotating seat; 120 - Ring gear plate; 121 - Planet gear; 122 - Planet gear mounting disc; 123 - Permanent magnet ring; 124 - Central gear; 125 - First limiting electromagnet; 126 - Second limiting electromagnet; 127 - Support frame; 128 - Driving motor; 129 - Top fitting electromagnet; 130 - Injection pipe; 131 - Hopper; 132 - Elastic tension bar; 133 - Wing-shaped counterweight; 134 - L-shaped bracket. Specific embodiments

[0022] The following combines the attached Figures 1 - 7 drawings, and further illustrates the technical solution of the present invention through specific embodiments.

[0023] The present invention provides an integrated casting device for an automobile engine oil pan, including a rotating base 119, on which a formed conical rotating support 101 is rotatably mounted. At the bottom of the outer surface of the formed conical rotating support 101, a concave mold 110 is provided. A convex mold 108 is arranged in the concave mold 110, and a gap for forming the shape of the engine oil pan is provided between the convex mold 108 and the inner wall of the concave mold 110. An injection groove 102 is provided at the axis of the formed conical rotating support 101, and the injection groove 102 is communicated with the concave mold 110 through an injection channel 104. Among them, exhaust holes 109 are provided at the top edge of the concave mold 110. A plurality of support frames 127 are fixedly installed on the lower surface of the rotating base 119, and a driving motor 128 is fixedly installed on the support frames 127. The driving motor 128 is coaxially arranged with the rotating base 119, and the driving motor 128 is arranged below the rotating base 119. The driving motor 128 is used to drive the formed conical rotating support 101 to rotate. There are three concave molds 110, convex molds 108, and injection channels 104, and the injection channels 104, convex molds 108, and concave molds 110 are rotationally equidistantly arranged on the circumferential inclined surface of the formed conical rotating support 101. Among them, three L-shaped bracket rotating seats 103 corresponding to the positions of the concave molds 110 are also fixedly installed on the formed conical rotating support 101, and an L-shaped bracket 134 is movably installed on each L-shaped bracket rotating seat 103. One end of the L-shaped bracket 134 far from the L-shaped bracket rotating seat 103 is fixedly installed with a wing-shaped counterweight 133. At the axis position of the formed conical rotating support 101, an injection pipe 130 communicated with the inside of the injection groove 102 is also fixedly installed, and three top-fitting electromagnets 129 magnetically contacting and cooperating with the wing-shaped counterweight 133 are fixedly installed on the circumferential surface of the injection pipe 130. An elastic tension bar 132 is also elastically connected between the injection pipe 130 and the L-shaped bracket 134. The elastic tension bar 132 is used to pull the L-shaped bracket 134 to swing towards the top-fitting electromagnet 129, so that the wing-shaped counterweight 133 is in contact with the top-fitting electromagnet 129.

[0024] Three support arms 117 are also fixedly installed on the circumferential inclined surface of the formed conical rotating support body 101. Two parallel convex die support slide rods 115 are slidably installed on each support arm 117. The two convex die support slide rods 115 are fixedly matched with the convex die 108. A convex die return spring 116 is arranged around each convex die support slide rod 115. The two ends of the convex die return spring 116 are fixedly matched with the support arm 117 and the convex die 108. A downward pressing ejector rod 118 is fixedly installed on the convex die 108. The downward pressing ejector rod 118 is in contact and sliding fit with the L-shaped bracket 134. The downward pressing ejector rod 118 is used to transfer the force on the L-shaped bracket 134 to the convex die 108. A funnel 131 is inserted at the top end of the injection pipe 130. Three discharge push plates 112 are also slidably installed on the formed conical rotating support body 101. A top contact plate 113 and a bottom contact plate 114 are respectively fixedly installed at the top end and the bottom end of the discharge push plate 112. The two ends of the discharge push plate 112 extend to the lower part and the upper oblique part of the formed conical rotating support body 101. The top contact plate 113 is in contact fit with the convex die support slide rod 115. The lower surface of the bottom contact plate 114 is in magnetic contact fit with a discharge electromagnet 111. The discharge electromagnet 111 is fixedly installed on the lower surface of the formed conical rotating support body 101. A discharge return spring embedding trapezoidal hole 107 is obliquely opened on the lower surface of the formed conical rotating support body 101. The axis of the discharge return spring embedding trapezoidal hole 107 is arranged parallel to the sliding direction of the discharge push plate 112 on the formed conical rotating support body 101. The discharge return spring embedding trapezoidal hole 107 is communicated with the inside of the concave die 110 through an insertion hole. A discharge ejector pin 105 is slidably and sealingly inserted in the insertion hole. A discharge return spring 106 is arranged around the discharge ejector pin 105. One end of the discharge return spring 106 is fixed to the bottom end of the discharge ejector pin 105, and the other end of the discharge return spring 106 is fixed to the inner wall of the discharge return spring embedding trapezoidal hole 107. The bottom contact plate 114 is in contact fit with the discharge ejector pin 105. A toothed ring disc 120 is rotatably installed on the lower surface of the rotating seat 119. The toothed ring disc 120 and the central position of the lower surface of the formed conical rotating support body 101 are fixedly and synchronously rotated through a rotating shaft. A central gear 124 is rotatably fitted at the central position inside the toothed ring disc 120. The central gear 124 and the toothed ring disc 120 are meshed and driven by three planetary gears 121. The three planetary gears 121 are rotatably installed on a planetary gear mounting disc 122. A permanent magnet ring 123 is fixedly installed at the edge position of the planetary gear mounting disc 122.Two stacked and coaxially arranged first limiting electromagnets 125 and second limiting electromagnets 126 are fixedly installed on the lower surface of the rotating base 119. Among them, the permanent magnet ring 123 is rotatably installed in the inner rings of the first limiting electromagnet 125 and the second limiting electromagnet 126, and the permanent magnet ring 123 is magnetically engaged with both the first limiting electromagnet 125 and the second limiting electromagnet 126. Among them, the output shaft of the driving motor 128 penetrates through the planetary gear mounting disc 122 and is fixedly engaged with the central gear 124. The planetary gear mounting disc 122 is rotatably engaged with the output shaft of the driving motor 128, and the toothed ring disc 120 is rotatably engaged with the planetary gear mounting disc 122.

[0025] The working principle of an integrated casting device for an automobile engine oil pan disclosed by the present invention is as follows: Heating wires are embedded inside the forming conical rotating support body 101 at the injection groove 102, injection channel 104, concave mold 110, and convex mold 108. During use, the driving motor 128 and the first limiting electromagnet 125 are started (the magnetic force generated by the first limiting electromagnet 125 is greater than that of the second limiting electromagnet 126, and the installation positions of the first limiting electromagnet 125 and the second limiting electromagnet 126 can be interchanged). After the first limiting electromagnet 125 is started, it generates a magnetic force to attract the permanent magnet ring 123 through the magnetic force, preventing the permanent magnet ring 123 from rotating. Since the permanent magnet ring 123 cannot rotate, the three planetary gears 121 on the planetary gear mounting disc 122 cannot rotate. At this time, the output shaft of the driving motor 128 drives the central gear 124, and the central gear 124 drives the toothed ring disc 120 to rotate through the planetary gears 121. The rotation of the toothed ring disc 120 drives the forming conical rotating support body 101 to rotate. The rotation of the forming conical rotating support body 101 will drive the injection groove 102 and the injection channel 104 to rotate. At this time, the molten metal is poured into the funnel 131, and the molten metal inside the funnel 131 flows into the injection groove 102 through the injection pipe 130, and then flows into the injection channel 104. At this time, the molten metal will rotate together with the forming conical rotating support body 101. The rotating molten metal will be subjected to centrifugal force, and at this time, the molten metal will flow towards the gap between the concave mold 110 and the convex mold 108 under the action of centrifugal force until the gap is filled. During this filling process, the air will be discharged through the exhaust hole 109 at the top. When the forming conical rotating support body 101 rotates, it will also drive the L-shaped bracket 134 and the wing-shaped counterweight 133 to rotate. Therefore, when starting the first limiting electromagnet 125, it is necessary to make the top fitting electromagnet 129 in a power-off state (that is to say, the top fitting electromagnet 129 and the second limiting electromagnet 126 are powered on and off synchronously). Then, when the wing-shaped counterweight 133 rotates and is subjected to centrifugal force, it will drive the L-shaped bracket 134 to swing on the L-shaped bracket rotating seat 103, thereby pulling the elastic tension bar 132 to deform. The outward swing of the L-shaped bracket 134 will press down the pressing rod 118, and the pressing rod 118 will press the convex mold 108 against the concave mold 110 to make the two sealed. Among them, the wing-shaped counterweight 133 will also be subjected to a downward pressure during the rotation process (the radian of the upper surface of the wing-shaped counterweight 133 is smaller than that of the lower surface). After the relative movement between the wing-shaped counterweight 133 and the air, the pressure on the upper surface of the wing-shaped counterweight 133 will be greater than that on the lower surface. At this time, it will be subjected to a downward pressure, thereby squeezing the convex mold 108.

[0026] Next, it is necessary to stop all the heating wires from working, and then continue to maintain the rotational speed state of the formed conical rotating support 101, wait for the molten metal to cool, and then cut off the power supply of the first limiting electromagnet 125. At this time, the first limiting electromagnet 125 will no longer magnetically attract the permanent magnet ring 123, which will cause the planetary gear mounting disc 122 and the permanent magnet ring 123 to rotate. Therefore, the power on the drive motor 128 will be released to the planetary gear mounting disc 122 (because the rotation of the formed conical rotating support 101 is a load, and relative to the rotation of the planetary gear mounting disc 122, the resistance at the planetary gear mounting disc 122 is much smaller than the resistance of the formed conical rotating support 101). Therefore, at this time, the formed conical rotating support 101 will not be driven by the output shaft of the drive motor 128 (almost not driven because of friction), but will slowly decelerate and rotate under its own inertia. When the centrifugal force and the upper and lower pressure difference received by the wing-shaped counterweight 133 cannot enable the L-shaped bracket 134 to overcome the elastic force of the elastic tension bar 132, it will swing towards the top contact electromagnet 129 under the pull of the elastic tension bar 132, and then the wing-shaped counterweight 133 will fit with the top contact electromagnet 129. At this time, start the top contact electromagnet 129 and the second limiting electromagnet 126. Since the magnetic force of the second limiting electromagnet 126 is less than that of the first limiting electromagnet 125, it cannot completely magnetically attract the permanent magnet ring 123, resulting in the permanent magnet ring 123 only being hindered by the magnetic force of the second limiting electromagnet 126. Therefore, the rotation of the permanent magnet ring 123 is hindered, and the planetary gear mounting disc 122 is also hindered, and the revolution of the planetary gear 121 will be hindered. At this time, the transmission efficiency from the output shaft of the drive motor 128 to the formed conical rotating support 101 will decrease because part of the power is used to drive the rotation of the planetary gear mounting disc 122, resulting in a decrease in the rotational speed of the formed conical rotating support 101 (compared with when the first limiting electromagnet 125 is started). At this time, the centrifugal force generated by the rotation of the formed conical rotating support 101 driving the convex mold 108 to rotate will compress the convex mold return spring 116, and at the same time, the convex mold support slide rod 115 will slide relative to the support arm 117, and the convex mold 108 will be pulled out of the concave mold 110, and then the formed oil pan will remain in the concave mold 110. At this time, it is necessary to cut off the power supply of the unloading electromagnet 111 (start the second limiting electromagnet 126 first and then cut off the power supply of the unloading electromagnet 111, with an interval of 2 - 3 seconds in the middle). When the unloading electromagnet 111 is powered off, it will lose its magnetic force and thus lose the suction force on the bottom contact plate 114. The top contact plate 113, the unloading push plate 112, and the bottom contact plate 114 will slide outward under the action of the centrifugal force. At the same time, when the convex mold support slide rod 115 contacts the top contact plate 113, it will also be affected by the centrifugal force generated by the rotation of the convex mold 108.At this time, the bottom contact plate 114 will squeeze the unloading ejector pin 105, and the unloading ejector pin 105 squeezes the unloading return spring 106, causing the unloading return spring 106 to compress. The unloading ejector pin 105 is pushed into the concave mold 110 to eject the oil pan that has been cooled and formed in the concave mold 110, so that the outer surface of the oil pan is separated from the inner wall of the concave mold 110. At this time, it is still in a rotating state, so the formed oil pan will be separated from between the concave mold 110 and the convex mold 108 under the action of centrifugal force. Finally, stop the driving motor 128 and the second limiting electromagnet 126, and start the unloading electromagnet 111 again to reset all the moving parts, and then proceed with the forming of the next oil pan.

Claims

1. An integrated casting device for the oil pan of an automobile engine, characterized in that: It includes a rotating base (119), on which a formed conical rotating support (101) is rotatably mounted. At the bottom of the outer surface of the formed conical rotating support (101), a concave mold (110) is provided. A convex mold (108) is arranged in the concave mold (110). A gap for forming the shape of the engine oil pan is provided between the convex mold (108) and the inner wall of the concave mold (110). An injection groove (102) is provided at the axis of the formed conical rotating support (101). The injection groove (102) and the concave mold (110) are communicated through an injection channel (104). An exhaust hole (109) is provided at the top edge of the concave mold (110). A plurality of support frames (127) are fixedly mounted on the lower surface of the rotating base (119). A driving motor (128) is fixedly mounted on the support frames (127). The driving motor (128) is coaxially arranged with the rotating base (119), and the driving motor (128) is arranged below the rotating base (119). The driving motor (128) is used to drive the formed conical rotating support (101) to rotate. There are three concave molds (110), three convex molds (108), and three injection channels (104). The injection channels (104), the convex molds (108), and the concave molds (110) are rotationally and equidistantly arrayed on the circumferential inclined surface of the formed conical rotating support (101). Three L-shaped bracket rotating seats (103) corresponding to the positions of the concave molds (110) are fixedly mounted on the formed conical rotating support (101). An L-shaped bracket (134) is movably mounted on each L-shaped bracket rotating seat (103). One end of the L-shaped bracket (134) away from the L-shaped bracket rotating seat (103) is fixedly mounted with a wing-shaped counterweight (133). An injection pipe (130) communicated with the inside of the injection groove (102) is fixedly mounted at the axis position of the formed conical rotating support (101). Three top-fitting electromagnets (129) magnetically contacting and cooperating with the wing-shaped counterweight (133) are fixedly mounted on the circumferential surface of the injection pipe (130). An elastic pull bar (132) is also elastically connected between the injection pipe (130) and the L-shaped bracket (134). The elastic pull bar (132) is used to pull the L-shaped bracket (134) to swing towards the top-fitting electromagnet (129) so that the wing-shaped counterweight (133) fits with the top-fitting electromagnet (129). On the circumferential inclined surface of the formed conical rotating support (101), three support arms (117) are fixedly installed. On each support arm (117), two parallel convex die support slide rods (115) are slidably installed. The two convex die support slide rods (115) are fixedly fitted with the convex die (108). On each convex die support slide rod (115), a convex die return spring (116) is wound around. The two ends of the convex die return spring (116) are fixedly fitted with the support arm (117) and the convex die (108). A downward pressing ejector rod (118) is fixedly installed on the convex die (108). The downward pressing ejector rod (118) is in contact and sliding fit with the L-shaped bracket (134). The downward pressing ejector rod (118) is used to transfer the force on the L-shaped bracket (134) to the convex die (108). A funnel (131) is inserted at the top end of the injection pipe (130).

2. The integrated casting equipment for the oil pan of an automobile engine according to claim 1, characterized in that: On the formed conical rotating support (101), three unloading push plates (112) are slidably installed. At the top and bottom ends of the unloading push plate (112), a top contact plate (113) and a bottom contact plate (114) are fixedly installed respectively. The two ends of the unloading push plate (112) extend to the lower part and the upper oblique part of the formed conical rotating support (101). The top contact plate (113) is in contact fit with the convex die support slide rod (115). The lower surface of the bottom contact plate (114) is in magnetic contact fit with an unloading electromagnet (111). The unloading electromagnet (111) is fixedly installed on the lower surface of the formed conical rotating support (101).

3. An integrated casting device for an automotive engine oil pan according to claim 2, characterized in that: On the lower surface of the formed conical rotating support (101), a trapezoidal hole (107) for embedding the unloading return spring is obliquely opened. The axis of the trapezoidal hole (107) for embedding the unloading return spring is parallel to the sliding direction of the unloading push plate (112) on the formed conical rotating support (101). The trapezoidal hole (107) for embedding the unloading return spring is communicated with the inside of the concave die (110) through a jack. An unloading ejector pin (105) is slidably and hermetically inserted in the jack. A unloading return spring (106) is wound around the unloading ejector pin (105). One end of the unloading return spring (106) is fixed to the bottom end of the unloading ejector pin (105), and the other end of the unloading return spring (106) is fixed to the inner wall of the trapezoidal hole (107) for embedding the unloading return spring. The bottom contact plate (114) is in contact fit with the unloading ejector pin (105).

4. An integrated casting device for an automobile engine oil pan according to claim 3, characterized in that: A toothed ring disc (120) is rotatably installed on the lower surface of the rotating seat (119). The toothed ring disc (120) and the axial center position of the lower surface of the formed conical rotating support (101) are fixedly and synchronously rotated through a rotating shaft. A central gear (124) is rotatably fitted at the center position inside the toothed ring disc (120). The central gear (124) and the toothed ring disc (120) are meshed and driven by three planetary gears (121). The three planetary gears (121) are rotatably installed on a planetary gear mounting disc (122). A permanent magnet ring (123) is fixedly installed at the edge position of the planetary gear mounting disc (122).

5. An integrated casting device for an automobile engine oil pan according to claim 4, characterized in that: Two stacked and coaxially arranged first limiting electromagnets (125) and second limiting electromagnets (126) are fixedly installed on the lower surface of the rotating base (119). Among them, the permanent magnet ring (123) is rotatably installed in the inner ring of the first limiting electromagnet (125) and the second limiting electromagnet (126), and the permanent magnet ring (123) is magnetically engaged with both the first limiting electromagnet (125) and the second limiting electromagnet (126). The output shaft of the driving motor (128) penetrates the planetary gear mounting disc (122) and is fixedly engaged with the central gear (124). The planetary gear mounting disc (122) is rotatably engaged with the output shaft of the driving motor (128), and the toothed ring disc (120) is rotatably engaged with the planetary gear mounting disc (122).

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